#!/bin/bash

# Copyright 2015 The Kubernetes Authors All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. /start-common.sh

case ${SPARK_ROLE} in
    "master")
        echo "$(hostname -i) spark-master" >> /etc/hosts

        # Run spark-class directly so that when it exits (or crashes), the pod restarts.
        /opt/spark/bin/spark-class org.apache.spark.deploy.master.Master --ip spark-master --port 7077 --webui-port 8080
        ;;
    "worker")
        : ${POD_NAMESPACE='default'}
        : ${SPARK_MASTER_SERVICE='spark-master'}
        KUBE_TOKEN=$(cat /var/run/secrets/kubernetes.io/serviceaccount/token)
        SPARK_MASTER_IP=$(curl -sSk -H "Authorization: Bearer $KUBE_TOKEN" https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_PORT_443_TCP_PORT/api/v1/namespaces/${POD_NAMESPACE}/endpoints/${SPARK_MASTER_SERVICE}|jq --raw-output .subsets[0].addresses[0].ip)
        # Run spark-class directly so that when it exits (or crashes), the pod restarts.
        /opt/spark/bin/spark-class org.apache.spark.deploy.worker.Worker spark://${SPARK_MASTER_IP}:7077 --webui-port 8081
        ;;
esac

